CN105964894A - Paint for EPC (expendable casting process) - Google Patents
Paint for EPC (expendable casting process) Download PDFInfo
- Publication number
- CN105964894A CN105964894A CN201610455910.8A CN201610455910A CN105964894A CN 105964894 A CN105964894 A CN 105964894A CN 201610455910 A CN201610455910 A CN 201610455910A CN 105964894 A CN105964894 A CN 105964894A
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- CN
- China
- Prior art keywords
- parts
- coating
- ludox
- binding agent
- silica flour
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Abstract
The invention discloses paint for EPC (expendable casting process). The paint comprises the following components in parts by mass: 7-8 parts of a composite binder, 63-66 parts of water, 3-4 parts of ludox, 45-55 parts of high-aluminum fine powder and 45-55 parts of silica flour. A preparation method of the paint comprises the following steps: firstly, adding water in stirring equipment, starting the stirrer, adding the composite binder and the ludox, stirring for 0.5-1.5 hours at a high speed, then, adding the high-aluminum fine powder and the silica flour, stirring for 0.5-1.5 hours at a high speed, and finally stirring for 0.5 hour at a low speed. According to the invention, the normal temperature and high temperature resistance of a coating are enhanced, the coating is unlikely to break during the pouring process to prevent fused ceramsite and broken coating layer from entering into a product along with molten iron, so that the product quality is improved; the gas permeability is excellent; the paint has excellent smearing property and thixotropy, and the coating is uniform. In addition, the added ludox is high-temperature resistant to enable the coating to have high strength , and a cast casting is high in degree of finish.
Description
Technical field
The invention provides a kind of coating for dispellable mould casting.
Background technology
In order to avoid producing penetration, evaporative pattern apperance surface must be coated with one layer of fireproof coating.During casting-up, this layer of fireproof coating is between molten metal and molding sand, and the formation etc. to gasification, molten metal filling and the foundry goods of evaporative pattern apperance plays a very important role.
Domestic, the water based paint of numerous lost foam casting producers mainly comprises binding agent, water, silica flour, swelled ground, and coating breathability is stronger, but the room temperature of coating and high temperature strength are inadequate, rupture at casting process floating coat, cause sand and coating to enter in foundry goods with molten iron, affect casting quality.
Summary of the invention
The present invention proposes a kind of coating for dispellable mould casting, enhances room temperature and the high temperature strength of coating, is not easily broken at casting process floating coat, has good being coated with property and thixotropy.
To this end, the technical scheme is that a kind of coating for dispellable mould casting, by mass parts, 7-8 part compound binding agent, 63-66 part water, 3-4 part Ludox, 45-55 part high alumina fine powder, the silica flour of 45-55 part;
Compound method: first add water in mixing plant, start blender, add compound binding agent and Ludox, high-speed stirred 0.5-1.5 hour, be subsequently adding high alumina fine powder and silica flour, then high-speed stirred 0.5-1.5 hour, last stirring at low speed 0.5 hour.
Described composite caking agent is the mixture of inorganic binder and organic resin binding agent, and wherein, by mass percentage, inorganic binder is 40-60%, organic resin binding agent is 40-60%.Described inorganic binder is Ludox or waterglass, and described organic resin binding agent is water soluble phenol resin.
Beneficial effect: in the present invention, each component uses the coating for dispellable mould casting that rational proportion relation prepares,, enhance room temperature and the high temperature strength of coating, be not easily broken at casting process floating coat, avoid sand and the dope layer that ruptures to enter product with molten iron, improve the quality of product;Good permeability;Coating is made to have good being coated with property and thixotropy, coating uniform.The Ludox that it is possible to additionally incorporate is high temperature resistant, and the foundry goods that strength of coating is big, casting obtains can be made highly polished.
Detailed description of the invention
Below in conjunction with embodiment, further describe the present invention.
Embodiment 1
The preparation of compound binding agent:
(1) raw material is prepared: by mass percentage, inorganic binder is 40-60%, organic resin binding agent is 40-60%;
(2) mixing: mix homogeneously mutual with organic resin binding agent for inorganic binder, obtain compound binding agent.
Embodiment 2
Inorganic binder in embodiment 1 is Ludox or waterglass, the water soluble phenol resin in embodiment 1.
Embodiment 3
A kind of coating for dispellable mould casting, by mass parts, 7.5 parts of compound binding agents, 64.5 parts of water, 3.5 parts of Ludox, 50 parts of high alumina fine powders, the silica flour of 50 parts;
Compound method: first add water in mixing plant, start blender, add compound binding agent and Ludox, high-speed stirred 0.5-1.5 hour, is subsequently adding high alumina fine powder and silica flour, then high-speed stirred 0.5-1.5 hour, last stirring at low speed 0.5 hour, puts into coating in coating pond, can use.
Embodiment 4
A kind of coating for dispellable mould casting, by mass parts, 7 parts of compound binding agents, 63 parts of water, 4 parts of Ludox, 45 parts of high alumina fine powders, the silica flour of 55 parts;
Compound method: first add water in mixing plant, start blender, add compound binding agent and Ludox, high-speed stirred 0.5-1.5 hour, is subsequently adding high alumina fine powder and silica flour, then high-speed stirred 0.5-1.5 hour, last stirring at low speed 0.5 hour, puts into coating in coating pond, can use.
Embodiment 5
A kind of coating for dispellable mould casting, by mass parts, 8 parts of compound binding agents, 66 parts of water, 3 parts of Ludox, 55 parts of high alumina fine powders, the silica flour of 45 parts;
Compound method: first add water in mixing plant, start blender, add compound binding agent and Ludox, high-speed stirred 0.5-1.5 hour, is subsequently adding high alumina fine powder and silica flour, then high-speed stirred 0.5-1.5 hour, last stirring at low speed 0.5 hour, puts into coating in coating pond, can use.
The coating for dispellable mould casting of embodiment 3 preparation, combination property is best.
Claims (4)
1. a coating for dispellable mould casting, by mass parts, 7-8 part compound binding agent, 63-66 part water, 3-4 part Ludox, 45-55 part high alumina fine powder, the silica flour of 45-55 part;
Compound method: first add water in mixing plant, start blender, add compound binding agent and Ludox, high-speed stirred 0.5-1.5 hour, be subsequently adding high alumina fine powder and silica flour, then high-speed stirred 0.5-1.5 hour, last stirring at low speed 0.5 hour.
A kind of coating for dispellable mould casting the most according to claim 1, it is characterised in that: by mass parts, 7.5 parts of compound binding agents, 64.5 parts of water, 3.5 parts of Ludox, 50 parts of high alumina fine powders, the silica flour of 50 parts.
A kind of coating for dispellable mould casting the most according to claim 1 and 2, it is characterized in that the mixture that described composite caking agent is inorganic binder and organic resin binding agent, wherein, by mass percentage, inorganic binder is 40-60%, organic resin binding agent is 40-60%, described inorganic binder is Ludox or waterglass, and described organic resin binding agent is water soluble phenol resin.
A kind of coating for dispellable mould casting the most according to claim 3, it is characterised in that: inorganic binder is Ludox or waterglass, and organic resin binding agent is water soluble phenol resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610455910.8A CN105964894A (en) | 2016-06-22 | 2016-06-22 | Paint for EPC (expendable casting process) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610455910.8A CN105964894A (en) | 2016-06-22 | 2016-06-22 | Paint for EPC (expendable casting process) |
Publications (1)
Publication Number | Publication Date |
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CN105964894A true CN105964894A (en) | 2016-09-28 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201610455910.8A Pending CN105964894A (en) | 2016-06-22 | 2016-06-22 | Paint for EPC (expendable casting process) |
Country Status (1)
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CN (1) | CN105964894A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107511456A (en) * | 2017-08-03 | 2017-12-26 | 六安万邦机械科技有限公司 | A kind of casting technique of evaporative pattern |
Citations (6)
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JP2009525872A (en) * | 2005-05-25 | 2009-07-16 | アシュラント−ズートヒェミー−ケルンフェスト ゲーエムベーハー | Drying method of water-based coating agent |
CN101497105A (en) * | 2009-03-12 | 2009-08-05 | 深圳市景鼎现代科技有限公司 | Cast form water borne coating and technique for preparing the same |
CN102962396A (en) * | 2012-11-23 | 2013-03-13 | 湖北省潜江市民福化工机械有限公司 | Casting-purposed high-strength environmental-friendly water-based evanescent mode coating and preparation method thereof |
CN103357814A (en) * | 2013-07-24 | 2013-10-23 | 翼城县福旺铸造实业有限公司 | Lost foam casting-use paint formula and technology method thereof |
CN103506566A (en) * | 2013-10-11 | 2014-01-15 | 中联重科股份有限公司 | Coating for lost foam casting, and preparation method thereof |
CN104275435A (en) * | 2014-07-03 | 2015-01-14 | 渠县金城合金铸业有限公司 | High-precision evanescent mode cast steel coating |
-
2016
- 2016-06-22 CN CN201610455910.8A patent/CN105964894A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009525872A (en) * | 2005-05-25 | 2009-07-16 | アシュラント−ズートヒェミー−ケルンフェスト ゲーエムベーハー | Drying method of water-based coating agent |
CN101497105A (en) * | 2009-03-12 | 2009-08-05 | 深圳市景鼎现代科技有限公司 | Cast form water borne coating and technique for preparing the same |
CN102962396A (en) * | 2012-11-23 | 2013-03-13 | 湖北省潜江市民福化工机械有限公司 | Casting-purposed high-strength environmental-friendly water-based evanescent mode coating and preparation method thereof |
CN103357814A (en) * | 2013-07-24 | 2013-10-23 | 翼城县福旺铸造实业有限公司 | Lost foam casting-use paint formula and technology method thereof |
CN103506566A (en) * | 2013-10-11 | 2014-01-15 | 中联重科股份有限公司 | Coating for lost foam casting, and preparation method thereof |
CN104275435A (en) * | 2014-07-03 | 2015-01-14 | 渠县金城合金铸业有限公司 | High-precision evanescent mode cast steel coating |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107511456A (en) * | 2017-08-03 | 2017-12-26 | 六安万邦机械科技有限公司 | A kind of casting technique of evaporative pattern |
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Application publication date: 20160928 |
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